What to Watch: Tuesday, March 16

The finals get underway on American Idol! Don't forget to call in and vote for your favorite and don't miss Adrianna and Gia's blossoming relationship on 90210! Tuesday, March 16 8:00 pm American Idol, Fox (2 hrs) NEW Finally, the finals! The top 12 deliver their top performances. Will out comedian Ellen DeGeneres agree with Simon as they get closer to finding the next American Idol?

Adrianna and Gia are falling for each other on 90210

8:00 pm 90210, The CW (1 hr) NEW The claws are out this week as Naomi and Ivy go on a hike with Liam, while Jasper tries to blackmail Annie, and Silver and Teddy rethink their relationship. But best of all, Adrianna and Gia grow ever closer. 9:00 pm Melrose Place, The CW (1 hr) NEW A new tenant moves into Auggie’s apartment and doesn’t get along with Lauren, while David gets some big news. Also, Riley goes to Ben for help finding a job, much to Amanda’s dismay. Also features bisexual Ella. 10:00 pm Southland, TNT (1 hr) NEW Ben tracks a missing girl, while Sammy and Sal have some trouble working with Gil Puentez in order to find a ex-gangbanger. Also, Chickie tries to improve her cop skills, and Lydia and Rene help Brianna with her baby.